Safety-hook for glazing-machines



1. e. BAUMANN-v SAFETY HOOK'EOR GLAZING MACHINES. APPLICATION nuzo MAYa, 1918.

1,392,041. e sept 27,1921.

' t 33 g3 3 0, 247. 2g

45 INVENTORV 37 ,25 3 J W I 7 1 44 4 13 5 7TORNEX:

UNITED STATES PATENT, OFFICE.

JOSEPH G. BAUMANN, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO ALFREDLAYMAN, OF WILMINGTON, DELAWARE.

SAFETY-HOOK -FOR GLAZING-MACHINES.

To all whom it may concern:

Be it known that I, JOSEPH BAUMANN, a citizen of the United States,residing at 2236 E. Allegheny Av., Philadelphia, in the county ofPhiladelphia, and State of Pennsylvania, have invented a certain new anduseful, Safety-Hook for Glazing-Machines, of which the following is aspecification.

My invention relates to glazing machines for leather finishing and hasto do primarily with thebearings by which the rod support of a glazingtool is pivoted.

The purpose of myinvention is to transfer the wearing surface of thebearing from the rod or support-to the pin and socket or other suitablebearing in whichthe pin does not rotate within the rod..

A further purpose: of my inventionis to provide a bearingfor therocker-head in which the supportinghooks are fixed, with respect to thepin oflthebearin'g and oscil latory. movement takes place between thepin and the supports therefor. y,

Further purposes will appear in the specification and in the claimshereof, i

I have preferred to illustrate my invention by but oneform thereof,selecting as this preferred form a. constructionwhich has proved inuseto be practical, efficient and inexpensive and which at the same timewell illustrates the principles of my invention.

Figure 1 is a vertical longitudinal section corresponding in position toline 11 of Fig. 2, showing my preferred form.

Fig. 2 is a rear elevation of the construction seen in Fig. 1. 3

Figs. 3 and 4 are enlarged fragmentary sections at right angles to eachother corresponding to the construction in Figs. 1 and 2 and in thepositions shown by lines 3-3 in Fig. 4: and 4.4 in Fig. 3. I

In the" drawings, similar numerals indicate like parts.

In glazing machines, such for example as the Bow-er machine, a greatdeal of difficulty has been found in supportingthe rockerhead suitablyto permit proper movement, while maintaining the strength of thesupport. The moving parts have a large momentum and move so rapidly thatthe wear upon the supporting rods is large and the rods themselvesfrequently break, constitutin a danger to the operators and causing inury to the machinery.

Specification of Letters Patent. Patented Sept. 27, 1921. Applicationfiled May 8, 1918 SeriaINo. 233,365. I

Inthedrawing I have shown the usual base 1, vert1cal standards 2, 2, topbar 8 and cross frame 4:. The bed 5 isprovided with a pad 6 upon whichthe leather is to a be treated.

The cross frame lies between the standards and comprises transverselyextending main cross pieces 7 and 8 supported at their ends and onopposite sides of the central space 9. The lower faces at the sidesofthe frame form a guiding contour 10, termed a track against whichbears the curved upper surface 11 of rocker-head 12. This track definesthe path of movement of the rockerhead and of the depending bracket 13rigidly secured thereto. i v e The rocker-head is anchored againstlongitudinalmovement by a rod 14 secured to the cross piece '7 as at 15and to a pin through the rocker-head as at 16. Vertical movement of therocker-head is controlled by a fioating bar 17 and hooks 1819resiliently pressing vthe upper contour 11 against the track 10 inwhatever angular position the rocker-head occupies.

The resilience offthe supportis obtained by springs 2 0-21 between thecross pieces 7 and 8 and the floating bar 17. The springs are heldagainst displacement by studs 22.

The rods 18 19 are fastened at their upper ends to, a bar 23 which has acurved surface and is freeto oscillate in arecess2 1 in bar 17 andat'their lower ends are connected to the rocker-head by a pin 25.

The bracket 13 is held in position laterally by guides 26, one on eachside. It carries a head 27 pivoted at 28 and terminating in tool 29.This head is operated and the rocker-head is rocked by a connecting rod30 rigidly secured to the head at 31 at one end and to a wrist pin 32upon operating wheel 33 at the other end.

As far as has been detailed this structure is old and well known, exceptfor the type of connection used and the fact that the rods 18, 19 arerigid, where those previously used have been jointed in the middle by ahook joint. My invention has to do with the connection between the lowerends of hooks 18 and 19 and the rocker-head 12.

In the prior construction the pin extended across the rocker-head,passed through the bends at the lower ends of the hooks and turned inthem, wearing the hooks and pin excessively, reducing their strengthandunduly increasing the friction at this point.

By my invention I secure the hooks to the transverse pin in such a wayas to prevent turning movement between them and pro vide the bearingbetween the ends of the pin and sockets or bearing parts formed in therocker-head.

In order to most effectually and conveniently prevent turning of the pin25 and the ends 34 of the hook members I- bend the hook so as to makethe two sides 35 and 36 approximately parallel andv flatten the sides ofthe pin as at 37 and 38. Of course any effective union at this pointwould prevent turning. The form shown has been selected as simple andconvenient, inexpensive and easily placed and with drawn.

I protect the parts from dust, provide for suflicient oiling and at thesame time greatly improve the bearing quality by seating the ends of thepin in the cups 39, 40 which are provided with oil holes 41 and aretightly held in position within the sides 42, 43 of the rocker-head byscrews 44 passing through flanges 45. r

[I am thus able to use a steel pin within brass cup bearings greatlyreducing the friction and wear and permitting quick and easy replacementof the cup parts when appreciably worn. f

It will be obvious that my invention may be used not only inthemanufacture of the new machines but that it may alsobe quickly andeasily applied to theimp'rov ment of existing machines.

It will also be obvious that the parts, which for convenience I havecalled hooks, need not be of hook-formation and if the form of hooks beused they need not be integral but can be divided as desired.

Having thus described my invention, what I claim as new and desiretosecure by Letters Patent is 1. In a glazing machine comprising a fixedtrack, a resilient support above the track, a rocker head below thetrack, rods depending from the support to hold the rocker head and a pinin the rocker head with which the rods engage, thenovelty the noveltywhich comprises bearings in the form of cups.

5. In a structure according. to claim 1,

the novelty which comprises bearings having fianges by. which they aresecured in position in the rocker head. j

6. In a structure according to claim 2, the novelty which comprisesbearings having flanges by which they are secured .in position in therocker head,

7. In a structure according to claim 3', the novelty wihch comprisesbearings having flanges by which they are secured in position in therocker head.

8. In a structure according to claim 4, the novelty which [comprisesbearings having flanges by which they are secured .in position in therocker head.

JOSEPH Gr. BAUMANN.

Witnesses: I WVM. STEEL JACKSON, J. LUTHERIA KA FFMAN.

